First skinning attempt. advice needed


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Ronny
Ronny
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I just did a rough sanding with a 120grit and put on a thin layer with 73g hardener and 50g resin thoroughly mixed.
Will continue with a thin layer tomorrow aswell, and then let it sit for a couple of days and see how it works out.

Fingers crossed
Ronny
Ronny
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Thanks. I see i was a bit too sloppy when mixing this.
I have however only put on the first two layers, if i add subsequent layers with a correct mixratio will i be able to save this?
Strengt isnt an issue here as it is supposed to be flexible.
Hanaldo
Hanaldo
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Going off the mix ratio of 100 p.b.w resin to 145 p.b.w hardener, your mix ratio is off. You've used 4 grams too much hardener, it should have been 116 grams hardener to 80 grams resin. That doesn't sound like much, but it's 5% out. I don't know how sensitive the EF80 is to mix ratios, but generally with epoxies you should be within 1%. 

It's possible that it won't cure now, but it can't hurt to heat it up. If you can get it up to 50-60 degrees for 4 or 5 hours, then if it isn't hard after that then it isn't likely to cure unfortunately. 
Ronny
Ronny
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Thanks, the EC youtube videos was the reason i started with this =)

The resin is still tacky and now its 3,5 days since i put it on.
The EF80 flexible resin is supposed to have a 48hour cure time, did i get the mix wrong?
 I used 120g hardener and 80g resin.
If i put a heating lamp on the parts, will it cure faster?
Jacopo Carbonio
Jacopo Carbonio
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If you have bubbles into the resin after brushing you can use a heat-gun to make them pop; you can also use plastic film for food (I don't know how you call it in english) to make surface more uniform or to avoid difects in corners like yours; after the resin has cured sand it a little bit (pay attention to the fiber) and after resin again, and so on until it's not smooth. 
I recommend you this video about skinning:
Ronny
Ronny
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Ran out of uploadspace.




Ronny
Ronny
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At the moment my rockerpanels are soaking up the resin, i put the first layer on before bedtime and 10hours later i applied a second thicker layer.

I believe i left the base coat dry to long as the fabric did stick somewhat, but not as good as expected.
So the fabric has lifted several places. (see img_3888.jpg)
I tried pushing it down when i applied the second resin layer, but it still lifts, not a huge concern as this part mostly fits on the underside of the car.
But if there is anything i can try at this stage to fix it, let me know.

Next is the area around the fitting brackets, here i have used masking tape to hold the fabric in place, but during the night it has come loose.
Also i cut the fabric a bit short.
Im using the flexible resin, as i wanted the part to be flexible, so i was thinking once the resin dries, i will try to bend the fabric and tape it again and apply regular resin just around the bend?
Will that work to mix both the EF80 flexible resin with the coating resin?
I took a picture of the issue: IMG_3890.jpg

Finally around the most tricky bends i had to cut and overlap a bit, so it does not look nice, its hardly visible once fitted to the car, but as im in the learning stage let me know if there are any tricks i can use to make it look nicer. (see the rest of the pictures)
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IMG_3888.JPG (556 views, 1.00 MB)
IMG_3890.JPG (552 views, 1.00 MB)
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